6678 has 24 divisors (see below), whose sum is σ = 16848.
Its totient is φ = 1872.
The previous prime is 6673. The next prime is 6679. The reversal of 6678 is 8766.
It can be divided in two parts, 66 and 78, that added together give a square (144 = 122).
It is a plaindrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (6673) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100 + ... + 152.
It is an arithmetic number, because the mean of its divisors is an integer number (702).
26678 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 6678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8424).
6678 is an abundant number, since it is smaller than the sum of its proper divisors (10170).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6678 is a wasteful number, since it uses less digits than its factorization.
6678 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 68 (or 65 counting only the distinct ones).
The product of its digits is 2016, while the sum is 27.
The square root of 6678 is about 81.7190308313.
The cubic root of 6678 is about 18.8313796148.
The spelling of 6678 in words is "six thousand, six hundred seventy-eight".